Line Pressure Test: Notes
WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Carry out Line Pressure Test before carrying out Stall Speed Test. If line pressure is low at stall, do not carry out stall test or further transaxle damage may occur. Do not maintain wide open throttle (WOT) in any gear range for more than 5 seconds.
CAUTION:
The transaxle vehicle harness must be connected to verify these pressures.
The Line Pressure Test verifies that the line pressure is within specifications.
- Remove the line pressure port plug.
- Connect pressure gauge to line pressure tap.
- Start engine and check line pressures. Refer to following the Line Pressure Chart to determine if line pressure is within specifications.
- If line pressure is not within specifications, carry out on-board diagnostics and pinpoint test, air pressure check and repair main control system or pump as required.
- After completing the line pressure test install the line pressure port plug.
- Tighten to 14 Nm (10 lb-ft).
LINE PRESSURE CHART (2.3L AND 3.0L)
| Gear | Line Pressure at Idle | Line Pressure at Stall | ||
|---|---|---|---|---|
| kPa | psi | kPa | psi | |
| P/N | 441-524 | 64-76 | - | - |
| R | 441-524 | 64-76 | 1786-2027 | 259-294 |
| D | 324-372 | 47-54 | 1158-1269 | 168-184 |
| 2 | 324-372 | 47-54 | 1158-1269 | 168-184 |
| 1 | 324-372 | 47-54 | 1158-1269 | 168-184 |